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Vesnalui [34]
2 years ago
10

Could I have help with number 23 please?

Mathematics
2 answers:
vesna_86 [32]2 years ago
6 0
It’s A we did this in class today
Vlada [557]2 years ago
4 0
It’s a if you look at it close
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The combined SAT scores for the students at a local high school are normally distributed with a mean of 1479 and a standard devi
kotykmax [81]

Answer:

0.35% of students from this school earn scores that satisfy the admission requirement.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

The combined SAT scores for the students at a local high school are normally distributed with a mean of 1479 and a standard deviation of 302.

This means that \mu = 1479, \sigma = 302

The local college includes a minimum score of 2294 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement?

The proportion is 1 subtracted by the pvalue of Z when X = 2294. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{2294 - 1479}{302}

Z = 2.7

Z = 2.7 has a pvalue of 0.9965

1 - 0.9965 = 0.0035

0.0035*100% = 0.35%

0.35% of students from this school earn scores that satisfy the admission requirement.

6 0
3 years ago
12 times 12 equal 144
Nataly_w [17]

Answer:

Yes, it does

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Craig and Jeff are comparing their plans for downloading songs. Craig pays a monthly fee of $5.50 and then $0.25 per song he dow
Veronika [31]

Answer:

10 songs

Step-by-step explanation:

Let number of songs Craig and Jeff downloaded be s

5.50 + 0.25s = 0.80s

5.50 = 0.55s

s = 10

5 0
2 years ago
Use the pattern on the table to find the x and y intercepts (fill in the the rest of the table )
Ne4ueva [31]

Answer: 8

Step-by-step explanation:

2 - 8 = -6

8 0
3 years ago
If 20 men assemble 8 machines in a day, how many men are needed to assemble 12 machines in a day​
Agata [3.3K]

Answer:

make25 men

Step-by-step explanation:

20 assembled 8 so divide 4 into 20 = 5

Divide 4 into 8 =2.

So it take 5 men to assemble 4

20 +5=25

8 0
3 years ago
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